DUPLICATED INFERIOR VENA CAVA WITH INTERRUPTION AND AZYGOS CONTINUATION: A CASE REPORT AND LITERATURE REVIEW

Nguyen Truong Duc1, , Nguyen Thanh Hai1, Luu Thi Bich Ngoc1, Nguyen Hong Hai1, Tran Minh Long Trieu2
1 Vinmec Times City International Hospital
2 VinUniversity

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Tóm tắt

Background: Congenital anomalies of the inferior vena cava (IVC) are rare vascular variants that can have significant clinical implications, especially during surgical or interventional procedures. Case presentation: We present a rare case of a 39-year-old female who was found incidentally to have a duplicated IVC associated with interruption of the retrohepatic segment and azygos continuation. Multidetector computed tomography (MDCT) with contrast revealed bilateral IVCs running alongside the abdominal aorta, connected by a transverse venous bridge below the aortic bifurcation. Conclusion: This anomaly results from atypical persistence and regression of embryonic venous precursors, including the subcardinal and supracardinal veins. Awareness of such variants is crucial, as they may complicate retroperitoneal surgery, cardiopulmonary bypass, or IVC filter placement and can predispose to venous stasis and thrombosis. MDCT with multiplanar reconstruction remains the modality of choice for accurate diagnosis and anatomical delineation. 

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